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The small-field bistratified retinal ganglion cells have their cell body in the retina, and extend their axons to the LGN. The first synapse in the central visual pathway is the bistratified cell with the koniocellular cell in the LGN. The LGN of primates, located in the thalamus, is a laminated structure with 6 distinct layers of neurons. The LGN receives the sensory input from the retinal ganglion cells, and divides the incoming information into the four dorsal parvocellular and two ventral magnocellular layers. The koniocellular layers are interspersed between the magnocellular and parvocellular layers. The visual information from the two eyes are kept separate at this point, and are not brought together until reaching the visual cortex.